EP0470854A2 - Golf ball - Google Patents
Golf ball Download PDFInfo
- Publication number
- EP0470854A2 EP0470854A2 EP91307346A EP91307346A EP0470854A2 EP 0470854 A2 EP0470854 A2 EP 0470854A2 EP 91307346 A EP91307346 A EP 91307346A EP 91307346 A EP91307346 A EP 91307346A EP 0470854 A2 EP0470854 A2 EP 0470854A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- golf ball
- alpha
- weight
- ions
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/025—Copolymer of an unspecified olefin with a monomer other than an olefin
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0023—Covers
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/005—Cores
- A63B37/0051—Materials other than polybutadienes; Constructional details
- A63B37/0053—Thread wound
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/007—Characteristics of the ball as a whole
- A63B37/0072—Characteristics of the ball as a whole with a specified number of layers
- A63B37/0074—Two piece balls, i.e. cover and core
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/007—Characteristics of the ball as a whole
- A63B37/0077—Physical properties
- A63B37/0084—Initial velocity
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0366—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/0332—Structure of the conductor
- H05K2201/0335—Layered conductors or foils
- H05K2201/0355—Metal foils
Definitions
- the present invention relates to a golf ball. More particularly, it relates to a golf ball having excellent impact resilience and flying performance, of which the cover is formed from an ionomer resin which contains an alpha, beta-ethylenic unsaturated carboxylic acid in a larger amount than conventional ionomer resins.
- a golf ball is composed of a core and a cover covering the core.
- the cover generally used is mainly formed from an ionomer resin (see Japanese Kokai Publications 135078/1984 and 82768/1986), because the ionomer resin is commercially available cheaper than the other cover resins and has excellent cut resistance.
- the ionomer resin is a resin which is prepared by neutralizing a copolymer of an alpha-olefin, an alpha, beta-ethylenic unsaturated carboxylic acid and optionally an alpha, beta-ethylenic unsaturated carboxylic ester with metal, and many types of them are commercially available.
- the ionomer resins which are used as the cover of the golf balls contain the alpha, beta-ethylenic unsaturated carboxylic acid in an amount of less than 15 % by weight before neutralizing, and the other carboxyl-rich ionomer resins which contain more than 15 % by weight of it have never been employed.
- the present invention provides a golf ball which comprises a core and a cover covering the core, wherein the cover contains at least 20 % by weight of a carboxyl-rich ionomer resin prepared by neutralizing 15 to 80 mol % of carboxylic acid groups of an olefinic copolymer containing 16 to 30 % by weight of an alpha, beta-ethylenic unsaturated carboxylic acid with monovalent or divalent metal ions.
- the olefinic copolymer of the carboxyl-rich ionomer resin is obtained by copolymerizing an alpha-olefin with an alpha, beta-ethylenic unsaturated carboxylic acid.
- an amount of the alpha, beta-ethylenic unsaturated carboxylic acid is limited to 16 to 30 % by weight, preferably 20 to 30 % by weight, based on the total monomer weight.
- the balance of the monomer is the alpha-olefin. If the amount of the alpha, beta-ethylenic unsaturated carboxylic acid is less than 16 % by weight, a stiffness modulus is low and an impact resilience is low, thus resulting in poor flying performance.
- a cut resistance is also deteriorated. If it is more than 30 % by weight, the stiffness modulus of the ball is so high that a hit feeling is poor, and the durability when hit repeatedly is low.
- a portion of the alpha-olefin may be replaced with an alpha, beta-ethylenic unsaturated carboxylic ester which, however, does not exceed 20 % by weight based on the total monomer weight.
- Typical examples of the alpha, beta-ethylenic unsaturated carboxylic acids are acrylic acid, methacrylic acid, maleic acid, fumaric acid and the like.
- Typical examples of the alpha-olefins are ethylene, propylene and the like.
- the carboxyl-rich ionomer resin of the present invention is prepared by neutralizing 15 to 80 mol % of the carboxylic acid groups of the above mentioned olefinic copolymer with monovalent or divalent metal ions.
- the metal ions are monovalent metal ions, such as lithium ions, sodium ions, potassium ions and the like; divalent metal ions, such as alkaline earth metal ions (e.g. magnesium ions and calcium ions) and other metal ions (e.g. zinc ions and copper ions). If the neutralizing degree is less than 15 mol %, the impact resilience and durability of the ball are poor. If it is more than 80 mol %, the molding ability is poor and it is difficult to cover it on the core.
- the carboxyl-rich ionomer resin of the present invention has a stiffness modulus of 3,000 to 6,000 Kgf/cm2. Values of less than 3,000 Kgf/cm2 reduce impact resilience and those of more than 6,000 Kgf/cm2 deteriorate hit feeling and durability when hit repeatedly.
- the cover of the present invention contain at least 20 % by weight, preferably at least 30 % by weight, of the above obtained carboxyl-rich ionomer resin. If the carboxyl-rich ionomer resin is less than 20 % by weight, the technical effects of the improvement of rebound resilience and flying ability are insufficient.
- the cover resin composition may comprises the carboxyl-rich ionomer and a small amount of additives (e.g. pigment, filler, dispersant, antioxidant, ultraviolet absorber, photostabilizer and the like).
- the cover may further contain other resins, such as polyolefin, polyester elastomer, polyamide and the like, but these resins are formulated in a small amount, especially 10 % by weight or less.
- the core of the golf ball of the present invention can be either a solid core or a thread-wound core.
- the solid core is generally prepared by vulcanizing a rubber composition, for example at 140 to 170 °C for 10 to 49 minutes under pressure.
- the rubber composition may be 100 parts by weight of polybutadiene rubber, 10 to 60 parts by weight of a co-crosslinking agent (e.g. an alpha, beta-ethylenic unsaturated carboxylic acid, such as acrylic acid and methacrylic acid, a metal salt thereof, and a monohydric monomer, such as trimethylolpropane trimethacrylate), 10 to 30 parts by weight of a filler (e.g.
- a co-crosslinking agent e.g. an alpha, beta-ethylenic unsaturated carboxylic acid, such as acrylic acid and methacrylic acid, a metal salt thereof, and a monohydric monomer, such as trimethylolpropane trimethacrylate
- the solid core may have a multilayer construction if necessary.
- the thread-wound core is generally composed of a center and a thread rubber layer wound on the center.
- the center may be either a liquid center or a solid center.
- the solid center can be prepared by vulcanizing the rubber composition as explained for the solid core.
- Thread rubber is known to the art and may be prepared by vulcanizing a rubber composition comprising a natural rubber or a combination of a natural rubber and a synthetic polyisoprene rubber, an antioxidant, a vulcanization promoter and sulfur.
- a method for covering the cover resin composition on the core is not limited and can be conducted by art-known methods.
- a cover resin composition is formed into hemispherical half shells and a core is surrounded with two half shells, followed by pressure-molding at 130 to 170 °C for 1 to 5 minutes.
- the cover composition may be injection-molded to cover the core.
- a thickness of the cover layer is generally 1.0 to 3.0 mm. Dimples are formed on the surface of the cover and if necessary stamps and paint layers are formed thereon.
- a rubber composition was prepared by mixing 100 parts by weight of cis-1,4-polybutadiene (available from Japan Synthetic rubber Co., Ltd. as JSR BR01®), 30 parts by weight of zinc acrylate (available from Nippon Shokubai Kagaku Kogyo Co., Ltd.), 20 parts by weight of zinc oxide (available from Toho Zinc Co., Ltd.) and one part by weight of dicumyl peroxide (available from Nippon Oil & Fats Co., Ltd.), and compression-molded at 150 °C for 30 minutes to form a solid core having a diameter of 38.5 mm.
- cis-1,4-polybutadiene available from Japan Synthetic rubber Co., Ltd. as JSR BR01®
- zinc acrylate available from Nippon Shokubai Kagaku Kogyo Co., Ltd.
- zinc oxide available from Toho Zinc Co., Ltd.
- dicumyl peroxide available from Nippon Oil & Fats Co., Ltd.
- the ionomer resin having a composition as shown in Table 1 was mixed, and 100 parts by weight of the ionomer resin mixture was mixed with 2 parts by weight of titanium dioxide by an extruder to obtain a cover resin composition.
- Table 1 the numbers for the ionomer resins are based on parts by weight and the total of them indicates 100. Thus, the numbers also show % by weight.
- the solid core was covered with the cover resin composition by an injection molding to obtain a two piece solid golf ball.
- the ball was then coated with a paint to obtain a golf ball having a diameter of 42.8 mm.
- the obtained golf balls were evaluated by ball weight, compression, initial velocity, durability, low temperature durability, flying distance (carry) and stiffness modulus and the results are shown in Table 1.
- the golf balls of Examples 1 to 4 have superior initial velocities (i.e. higher impact resilience) and superior flying distance to those of Comparative Examples 1 to 3.
- the golf balls of Examples are excellent in durability and low temperature durability and have good hit feeling.
Abstract
Description
- The present invention relates to a golf ball. More particularly, it relates to a golf ball having excellent impact resilience and flying performance, of which the cover is formed from an ionomer resin which contains an alpha, beta-ethylenic unsaturated carboxylic acid in a larger amount than conventional ionomer resins.
- A golf ball is composed of a core and a cover covering the core. The cover generally used is mainly formed from an ionomer resin (see Japanese Kokai Publications 135078/1984 and 82768/1986), because the ionomer resin is commercially available cheaper than the other cover resins and has excellent cut resistance.
- The ionomer resin is a resin which is prepared by neutralizing a copolymer of an alpha-olefin, an alpha, beta-ethylenic unsaturated carboxylic acid and optionally an alpha, beta-ethylenic unsaturated carboxylic ester with metal, and many types of them are commercially available. The ionomer resins which are used as the cover of the golf balls, however, contain the alpha, beta-ethylenic unsaturated carboxylic acid in an amount of less than 15 % by weight before neutralizing, and the other carboxyl-rich ionomer resins which contain more than 15 % by weight of it have never been employed.
- It has been surprisingly found that a carboxyl-rich ionomer resin which contains 16 to 30 % by weight of an alpha, beta-ethylenic unsaturated carboxylic acid significantly improves the properties of the golf balls, such as impact resilience and flying performance. Thus, the present invention provides a golf ball which comprises a core and a cover covering the core, wherein the cover contains at least 20 % by weight of a carboxyl-rich ionomer resin prepared by neutralizing 15 to 80 mol % of carboxylic acid groups of an olefinic copolymer containing 16 to 30 % by weight of an alpha, beta-ethylenic unsaturated carboxylic acid with monovalent or divalent metal ions.
- The olefinic copolymer of the carboxyl-rich ionomer resin is obtained by copolymerizing an alpha-olefin with an alpha, beta-ethylenic unsaturated carboxylic acid. In the present invention, an amount of the alpha, beta-ethylenic unsaturated carboxylic acid is limited to 16 to 30 % by weight, preferably 20 to 30 % by weight, based on the total monomer weight. Thus, the balance of the monomer is the alpha-olefin. If the amount of the alpha, beta-ethylenic unsaturated carboxylic acid is less than 16 % by weight, a stiffness modulus is low and an impact resilience is low, thus resulting in poor flying performance. A cut resistance is also deteriorated. If it is more than 30 % by weight, the stiffness modulus of the ball is so high that a hit feeling is poor, and the durability when hit repeatedly is low. A portion of the alpha-olefin may be replaced with an alpha, beta-ethylenic unsaturated carboxylic ester which, however, does not exceed 20 % by weight based on the total monomer weight. Typical examples of the alpha, beta-ethylenic unsaturated carboxylic acids are acrylic acid, methacrylic acid, maleic acid, fumaric acid and the like. Typical examples of the alpha-olefins are ethylene, propylene and the like.
- The carboxyl-rich ionomer resin of the present invention is prepared by neutralizing 15 to 80 mol % of the carboxylic acid groups of the above mentioned olefinic copolymer with monovalent or divalent metal ions. Typical examples of the metal ions are monovalent metal ions, such as lithium ions, sodium ions, potassium ions and the like; divalent metal ions, such as alkaline earth metal ions (e.g. magnesium ions and calcium ions) and other metal ions (e.g. zinc ions and copper ions). If the neutralizing degree is less than 15 mol %, the impact resilience and durability of the ball are poor. If it is more than 80 mol %, the molding ability is poor and it is difficult to cover it on the core.
- It is preferred that the carboxyl-rich ionomer resin of the present invention has a stiffness modulus of 3,000 to 6,000 Kgf/cm². Values of less than 3,000 Kgf/cm² reduce impact resilience and those of more than 6,000 Kgf/cm² deteriorate hit feeling and durability when hit repeatedly.
- The cover of the present invention contain at least 20 % by weight, preferably at least 30 % by weight, of the above obtained carboxyl-rich ionomer resin. If the carboxyl-rich ionomer resin is less than 20 % by weight, the technical effects of the improvement of rebound resilience and flying ability are insufficient. The cover resin composition may comprises the carboxyl-rich ionomer and a small amount of additives (e.g. pigment, filler, dispersant, antioxidant, ultraviolet absorber, photostabilizer and the like). The cover may further contain other resins, such as polyolefin, polyester elastomer, polyamide and the like, but these resins are formulated in a small amount, especially 10 % by weight or less.
- The core of the golf ball of the present invention can be either a solid core or a thread-wound core. The solid core is generally prepared by vulcanizing a rubber composition, for example at 140 to 170 °C for 10 to 49 minutes under pressure. The rubber composition may be 100 parts by weight of polybutadiene rubber, 10 to 60 parts by weight of a co-crosslinking agent (e.g. an alpha, beta-ethylenic unsaturated carboxylic acid, such as acrylic acid and methacrylic acid, a metal salt thereof, and a monohydric monomer, such as trimethylolpropane trimethacrylate), 10 to 30 parts by weight of a filler (e.g. zinc oxide and barium sulfate), 0.5 to 5.0 parts by weight of a peroxide (e.g. dicumyl peroxide) and 0.1 to 1.0 parts by weight of an antioxidant. The solid core may have a multilayer construction if necessary.
- The thread-wound core is generally composed of a center and a thread rubber layer wound on the center. The center may be either a liquid center or a solid center. the solid center can be prepared by vulcanizing the rubber composition as explained for the solid core. Thread rubber is known to the art and may be prepared by vulcanizing a rubber composition comprising a natural rubber or a combination of a natural rubber and a synthetic polyisoprene rubber, an antioxidant, a vulcanization promoter and sulfur.
- The above explained solid core and thread-wound core are mere exemplification and are not limited thereto.
- A method for covering the cover resin composition on the core is not limited and can be conducted by art-known methods. For example, a cover resin composition is formed into hemispherical half shells and a core is surrounded with two half shells, followed by pressure-molding at 130 to 170 °C for 1 to 5 minutes. Also, the cover composition may be injection-molded to cover the core. A thickness of the cover layer is generally 1.0 to 3.0 mm. Dimples are formed on the surface of the cover and if necessary stamps and paint layers are formed thereon.
- The present invention is illustrated by the following Examples which, however, are not to be construed as limiting the invention to their details.
- A rubber composition was prepared by mixing 100 parts by weight of cis-1,4-polybutadiene (available from Japan Synthetic rubber Co., Ltd. as JSR BR01®), 30 parts by weight of zinc acrylate (available from Nippon Shokubai Kagaku Kogyo Co., Ltd.), 20 parts by weight of zinc oxide (available from Toho Zinc Co., Ltd.) and one part by weight of dicumyl peroxide (available from Nippon Oil & Fats Co., Ltd.), and compression-molded at 150 °C for 30 minutes to form a solid core having a diameter of 38.5 mm.
- Separately, the ionomer resin having a composition as shown in Table 1 was mixed, and 100 parts by weight of the ionomer resin mixture was mixed with 2 parts by weight of titanium dioxide by an extruder to obtain a cover resin composition. In Table 1, the numbers for the ionomer resins are based on parts by weight and the total of them indicates 100. Thus, the numbers also show % by weight.
- The solid core was covered with the cover resin composition by an injection molding to obtain a two piece solid golf ball. The ball was then coated with a paint to obtain a golf ball having a diameter of 42.8 mm.
-
- 1 Ball initial velocity: A golf ball was hit by a No.1 wood at a head speed of 45 m/s using a swing robot (available from True Temper Co., Ltd.) and its initial velocity was determined. Determination was carried 10 balls and the result is shown in an average value.
- 2 Durability: a golf ball was struck to a metal board at a speed of 45 m/s and number of striking was determined until the ball was broken. The number is expressed as an index number when the number of Example 1 is made 100.
- 3 Low-temperature durability: Ten golf balls were stored at -30 °C and then struck to a metal board at 45 m/s by an air gun up to 50 times. Number of the broken balls are shown in Tables.
- 4 Flying distance (carry): A golf ball was hit by a No.1 wood at a head speed of 45 m/s using a swing robot (available from True Temper Co., Ltd.) and its flying distance (carry) was determined. Determination was carried out with 10 balls and the result is shown in an average value.
- 5 Stiffness modulus of cover: This was determined by a stiffness tester (available from Toyo Seiki Co., Ltd.). A sample for the determination was prepared by press-molding to form a plain plate and allowing to stand at 23 °C at a relative humidity of 50 % for 2 weeks.
- a Amount of the remaining acid groups and Neutralization degree: The cover resin was dissolved in hot tetrahydrofuran, which was titrated with potassium hydroxide with heating to determine the remaining carboxyl group (COOH). The metal content (COOM), i.e. alkali metal and divalent metal, was determined by atomic analysis. An amount of the carboxyl groups before neutralization was obtained.
- b Neutralization degree: The obtained values from the above (a) were employed and the neutralization degree was calculated from the equation;
- As is shown in Table 1, the golf balls of Examples 1 to 4 have superior initial velocities (i.e. higher impact resilience) and superior flying distance to those of Comparative Examples 1 to 3. The golf balls of Examples are excellent in durability and low temperature durability and have good hit feeling.
Claims (9)
- A golf ball comprising a core and a cover covering said core, wherein said cover contains at least 20 % by weight of a carboxyl-rich ionomer resin prepared by neutralizing 15 to 80 mol % of carboxylic acid groups of an olefinic copolymer containing 16 to 30 % by weight of an alpha, beta-ethylenic unsaturated carboxylic acid with monovalent or divalent metal ions.
- A golf ball as claimed in Claim 1 wherein the olefinic copolymer is obtained by copolymerizing an alpha-olefin with an alpha, beta-ethylenic unsaturated carboxylic acid; an amount of the alpha, beta-ethylenic unsaturated carboxylic acid being 16 to 30 % by weight based on the total monomer weight.
- A golf ball as claimed in Claim 1 or Claim 2 wherein the alpha, beta-ethylenic unsaturated carboxylic acid includes acrylic acid, methacrylic acid, maleic acid or fumaric acid.
- A golf ball as claimed in any one of the preceding claims wherein the alpha-olefin includes ethylene or propylene.
- A golf ball as claimed in any one of the preceding claims wherein the metal ions are any one of lithium ions, sodium ions, potassium ions, magnesium ions, calcium ions, zinc ions copper ions or two or more thereof.
- A golf ball as claimed in any one of the preceding claims wherein the carboxyl-rich ionomer resin has a stiffness modulus of 3,000 to 6,000 kgf/cm².
- A golf ball as claimed in any one of the preceding claims wherein the cover comprises the carboxyl-rich ionomer resin and an additive.
- A golf ball as claimed in any one of the preceding claims wherein the cover comprises the carboxyl-rich ionomer resin, a conventional ionomer resin and an additive.
- A golf ball as claimed in any one of the preceding claims wherein the core is a solid core or a thread-wound core.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2213119A JP2915108B2 (en) | 1990-08-10 | 1990-08-10 | Golf ball |
JP213119/90 | 1990-08-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0470854A2 true EP0470854A2 (en) | 1992-02-12 |
EP0470854A3 EP0470854A3 (en) | 1992-09-09 |
EP0470854B1 EP0470854B1 (en) | 1995-10-25 |
Family
ID=16633898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91307346A Expired - Lifetime EP0470854B1 (en) | 1990-08-10 | 1991-08-09 | Golf ball |
Country Status (4)
Country | Link |
---|---|
US (1) | US5222739A (en) |
EP (1) | EP0470854B1 (en) |
JP (1) | JP2915108B2 (en) |
DE (1) | DE69114076T2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993015143A1 (en) * | 1992-01-31 | 1993-08-05 | E.I. Du Pont De Nemours And Company | High-resilience ionomeric compositions for golf ball covers |
EP0557069A1 (en) * | 1992-02-17 | 1993-08-25 | Sumitomo Rubber Industries, Co. Ltd | Golf ball |
WO1994001469A1 (en) * | 1992-07-03 | 1994-01-20 | Exxon Chemical Patents Inc. | Ionomer compositions, processes for their preparation, uses and conversion processes therefor |
GB2277932A (en) * | 1993-05-10 | 1994-11-16 | Wilson Sporting Goods | Golf ball |
EP0661082A1 (en) * | 1993-12-29 | 1995-07-05 | Sumitomo Rubber Industries Limited | Golf ball |
GB2260546B (en) * | 1991-10-15 | 1996-05-22 | Lisco Inc | Improved golf ball covers containing high acid ionomers |
EP0722752A1 (en) * | 1995-01-17 | 1996-07-24 | Wilson Sporting Goods Company | Golf ball with clear cover |
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US5873796A (en) * | 1990-12-10 | 1999-02-23 | Acushnet Company | Multi-layer golf ball comprising a cover of ionomer blends |
US5688869A (en) * | 1991-10-15 | 1997-11-18 | Lisco, Inc. | Golf ball cover compositions |
US6433094B1 (en) | 1991-10-15 | 2002-08-13 | Spalding Sports Worldwide, Inc. | Golf ball covers containing high acid ionomers |
US5368304A (en) | 1993-04-28 | 1994-11-29 | Lisco, Inc. | Low spin golf ball |
US6271316B1 (en) | 1993-04-28 | 2001-08-07 | Spalding Sports Worldwide, Inc. | Low spin golf ball |
US6451923B1 (en) | 1992-06-19 | 2002-09-17 | Spalding Sports Worldwide, Inc. | Low spin golf ball |
US6676876B2 (en) | 1993-04-28 | 2004-01-13 | The Top-Flite Golf Company | Method of molding a low spin golf ball comprising silicone material |
US6682440B2 (en) * | 1993-04-28 | 2004-01-27 | Callaway Golf Company | Golf ball with multi-layer cover |
US6261193B1 (en) | 1993-04-28 | 2001-07-17 | Spalding Sports Worldwide, Inc. | Low spin golf ball utilizing perimeter weighting |
US6162134A (en) | 1993-04-28 | 2000-12-19 | Spalding Sports Worldwide, Inc. | Low spin golf ball comprising silicone material |
US6142887A (en) * | 1996-09-16 | 2000-11-07 | Spalding Sports Worldwide, Inc. | Golf ball comprising a metal, ceramic, or composite mantle or inner layer |
US6193618B1 (en) | 1993-04-28 | 2001-02-27 | Spalding Sports Worldwide, Inc. | Low spin golf ball comprising a mantle with a cellular or liquid core |
US5803831A (en) * | 1993-06-01 | 1998-09-08 | Lisco Inc. | Golf ball and method of making same |
US6220972B1 (en) * | 1993-04-28 | 2001-04-24 | Spalding Sports Worldwide, Inc. | Golf ball with multi-layer cover |
US6287217B1 (en) | 1993-06-01 | 2001-09-11 | Spalding Sports Worldwide, Inc. | Multi-layer golf ball |
US6506130B2 (en) | 1993-06-01 | 2003-01-14 | Spalding Sports Worldwide, Inc. | Multi layer golf ball |
US7494427B2 (en) | 2001-11-05 | 2009-02-24 | Callaway Golf Company | Multi-layer golf ball |
US6210293B1 (en) | 1993-06-01 | 2001-04-03 | Spalding Sports Worldwide, Inc. | Multi-layer golf ball |
US6648777B2 (en) * | 1993-06-01 | 2003-11-18 | Callaway Golf Company | Multi-layer golf ball |
US6083119A (en) * | 1993-06-01 | 2000-07-04 | Spalding Sports Worldwide, Inc. | Multi-layer golf ball |
US6290614B1 (en) | 1998-03-18 | 2001-09-18 | Spalding Sports Worldwide, Inc. | Golf ball which includes fast-chemical-reaction-produced component and method of making same |
US6824476B2 (en) * | 1993-06-01 | 2004-11-30 | Callaway Golf Company | Multi-layer golf ball |
JP3564641B2 (en) * | 1993-06-01 | 2004-09-15 | ザ、トップ・フライト、ゴルフ、カムパニ | Improved multi-layer golf ball |
US6638185B2 (en) | 1993-06-01 | 2003-10-28 | The Top-Flite Golf Company | Multi-layer golf ball |
US6325731B1 (en) | 1993-06-01 | 2001-12-04 | Spalding Sports Wordwide, Inc. | Multi-layer golf ball |
US6855073B1 (en) * | 1998-03-18 | 2005-02-15 | Callaway Golf Company | Golf ball which includes fast-chemical-reaction-produced component and method of making same |
US6695718B2 (en) | 1993-06-01 | 2004-02-24 | The Top-Flite Golf Company | Golf ball with sulfur cured inner core component |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0115190A2 (en) * | 1982-12-28 | 1984-08-08 | E.I. Du Pont De Nemours And Company | Ionomers having improved low temperature properties |
US4911451A (en) * | 1989-03-29 | 1990-03-27 | Sullivan Michael J | Golf ball cover of neutralized poly(ethylene-acrylic acid) copolymer |
EP0443706A2 (en) * | 1990-01-10 | 1991-08-28 | Sumitomo Rubber Industries Limited | Golf ball |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59135078A (en) * | 1983-01-22 | 1984-08-03 | 住友ゴム工業株式会社 | Golf ball |
-
1990
- 1990-08-10 JP JP2213119A patent/JP2915108B2/en not_active Expired - Lifetime
-
1991
- 1991-08-02 US US07/739,448 patent/US5222739A/en not_active Expired - Lifetime
- 1991-08-09 EP EP91307346A patent/EP0470854B1/en not_active Expired - Lifetime
- 1991-08-09 DE DE69114076T patent/DE69114076T2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0115190A2 (en) * | 1982-12-28 | 1984-08-08 | E.I. Du Pont De Nemours And Company | Ionomers having improved low temperature properties |
US4911451A (en) * | 1989-03-29 | 1990-03-27 | Sullivan Michael J | Golf ball cover of neutralized poly(ethylene-acrylic acid) copolymer |
EP0443706A2 (en) * | 1990-01-10 | 1991-08-28 | Sumitomo Rubber Industries Limited | Golf ball |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
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GB2260546B (en) * | 1991-10-15 | 1996-05-22 | Lisco Inc | Improved golf ball covers containing high acid ionomers |
US5298571A (en) * | 1992-01-31 | 1994-03-29 | E. I. Du Pont De Nemours And Company | High-resilience ionomeric compositions for golf ball covers |
WO1993015143A1 (en) * | 1992-01-31 | 1993-08-05 | E.I. Du Pont De Nemours And Company | High-resilience ionomeric compositions for golf ball covers |
EP0557069A1 (en) * | 1992-02-17 | 1993-08-25 | Sumitomo Rubber Industries, Co. Ltd | Golf ball |
US5625003A (en) * | 1992-02-17 | 1997-04-29 | Sumitomo Rubber Industries, Ltd. | Golf ball |
WO1994001469A1 (en) * | 1992-07-03 | 1994-01-20 | Exxon Chemical Patents Inc. | Ionomer compositions, processes for their preparation, uses and conversion processes therefor |
GB2277932A (en) * | 1993-05-10 | 1994-11-16 | Wilson Sporting Goods | Golf ball |
EP0630665A2 (en) * | 1993-05-10 | 1994-12-28 | Wilson Sporting Goods Company | Golf ball with cover formed from hard and soft ionomer resins |
EP0630665A3 (en) * | 1993-05-10 | 1995-11-22 | Wilson Sporting Goods | Golf ball with cover formed from hard and soft ionomer resins. |
GB2277932B (en) * | 1993-05-10 | 1996-05-15 | Wilson Sporting Goods | Golf ball |
EP0661082A1 (en) * | 1993-12-29 | 1995-07-05 | Sumitomo Rubber Industries Limited | Golf ball |
US5586950A (en) * | 1993-12-29 | 1996-12-24 | Sumitomo Rubber Industries, Ltd. | Golf ball |
EP0722752A1 (en) * | 1995-01-17 | 1996-07-24 | Wilson Sporting Goods Company | Golf ball with clear cover |
Also Published As
Publication number | Publication date |
---|---|
DE69114076D1 (en) | 1995-11-30 |
US5222739A (en) | 1993-06-29 |
EP0470854B1 (en) | 1995-10-25 |
JPH0496771A (en) | 1992-03-30 |
EP0470854A3 (en) | 1992-09-09 |
DE69114076T2 (en) | 1996-04-18 |
JP2915108B2 (en) | 1999-07-05 |
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